- Definitions|1
- Thesaurus|1.7k
- Abbreviations|0
| certain(adjective, clear, confident, valid, undoubtable) | |
| confident(adjective, weak, certain, timid, assured) | |
| sure(adjective, clear, certain, stable, definite) | |
| arrogant | |
| desirous | |
| decided | |
| self-confident(adjective, secure) | |
| assured | |
| definite(adjective, clear, obscure, certain, doubtful) | |
| decisive | |
| determined(adjective, clear, certain) | |
| resolute | |
| undoubted(adjective, clear, certain, doubtful, undisputed) | |
| positive(adjective, certain, definite) | |
| convinced | |
| dependable(adjective, weak, unreliable) | |
| inevitable(adjective, certain, distant) | |
| sanguine | |
| secure(adjective, clear, weak, soft, certain) | |
| unavoidable |
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| APA | Smart Define. (2016). unsure thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/unsure/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "unsure thesaurus" https://smartdefine.org/unsure/thesaurus/antonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, unsure thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/unsure/thesaurus/antonyms>. |
| MLA | Smart Define. "unsure thesaurus" 24 March 2016. Web. 23 September 2026. <https://smartdefine.org/unsure/thesaurus/antonyms> |